Don't rely on 'Fl' symlink which only exists on Debian.

FL/About_Dialog.fl

@@ -4,9 +4,9 @@ header_name {.H}
 code_name {.C}
 decl {\#include <FL/Fl.H>} {} 
 
-decl {\#include <Fl/Fl_Shared_Image.H>} {} 
+decl {\#include <FL/Fl_Shared_Image.H>} {} 
 
-decl {\#include <Fl/filename.H>} {} 
+decl {\#include <FL/filename.H>} {} 
 
 Function {open_url( const char *url )} {open return_type void
 } {

FL/Boxtypes.H

@@ -17,7 +17,7 @@
 /* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
 /*******************************************************************************/
 
-#include <Fl/Fl.H>
+#include <FL/Fl.H>
 
 #define FL_BURNISHED_OVAL_BOX    FL_FREE_BOXTYPE
 

FL/Fl_Arc_Dial.C

@@ -20,8 +20,8 @@
 
 #include "Fl_Arc_Dial.H"
 
-#include <Fl/fl_draw.H>
-#include <Fl/Fl.H>
+#include <FL/fl_draw.H>
+#include <FL/Fl.H>
 #include <string.h>
 #include <stdio.h>
 #include <math.h>

mixer/src/Chain.C

@@ -59,7 +59,7 @@
 #include "Plugin_Module.H"
 #include "Controller_Module.H"
 
-#include <Fl/Fl_Box.H>
+#include <FL/Fl_Box.H>
 #include <FL/Fl_Menu.H>
 #include <FL/fl_ask.H>
 #include <FL/Fl_Flip_Button.H>

mixer/src/Plugin_Module.C

@@ -29,7 +29,7 @@
 #include <stdlib.h>
 #include <math.h>
 
-#include <Fl/fl_draw.H>
+#include <FL/fl_draw.H>
 #include <FL/Fl_Group.H>
 #include <FL/Fl_Menu_Button.H>
 

timeline/src/Audio_Sequence.C

@@ -21,7 +21,7 @@
  * contents' consist of these objects */
 
 #include <sys/time.h>
-#include <Fl/fl_ask.H>
+#include <FL/fl_ask.H>
 
 #include "Audio_Sequence.H"
 #include "Waveform.H"

timeline/src/TLE.fl

@@ -51,7 +51,7 @@ decl {\#include "Control_Sequence.H" // for options} {}
 
 decl {\#include <FL/Fl_File_Chooser.H>} {} 
 
-decl {\#include <Fl/Fl_Shared_Image.H>} {} 
+decl {\#include <FL/Fl_Shared_Image.H>} {} 
 
 decl {\#include <FL/Fl.H>} {selected
 } 

timeline/src/Timeline.H

@@ -52,7 +52,7 @@ class Sequence;
 class Sequence_Widget;
 
 #ifndef USE_SINGLEBUFFERED_TIMELINE
-#include <Fl/Fl_Overlay_Window.H>
+#include <FL/Fl_Overlay_Window.H>
 #else
 #include <FL/Fl_Single_Window.H>
 #endif